GB1535482A - Video signal recording and/or reproducing apparatus - Google Patents

Video signal recording and/or reproducing apparatus

Info

Publication number
GB1535482A
GB1535482A GB6746/77A GB674677A GB1535482A GB 1535482 A GB1535482 A GB 1535482A GB 6746/77 A GB6746/77 A GB 6746/77A GB 674677 A GB674677 A GB 674677A GB 1535482 A GB1535482 A GB 1535482A
Authority
GB
United Kingdom
Prior art keywords
frequency
carrier
tracks
luminance signal
recorded
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB6746/77A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Publication of GB1535482A publication Critical patent/GB1535482A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
    • H04N9/83—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only the recorded chrominance signal occupying a frequency band under the frequency band of the recorded brightness signal
    • H04N9/84—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only the recorded chrominance signal occupying a frequency band under the frequency band of the recorded brightness signal the recorded signal showing a feature, which is different in adjacent track parts, e.g. different phase or frequency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)

Abstract

1535482 Video recording systems SONY CORP 17 Feb 1977 [1 March 1976] 06746/77 Heading H4F The system records and reproduces video signals in successive parallel tracks on a magnetic tape. There is no guard band between the tracks, and in order to reduce cross-talk the luminance signal is frequency modulated on a first carrier when one track is recorded and on a second carrier when the adjacent tracks are recorded. The carriers are selected to be in frequency interleaved relationship, and preferably differ by (m + ¢)f H , where m is is integral and f H is the horizontal sync. frequency. The change from the first to the second carrier and vice versa is achieved by changing a bias value which is added to the luminance signal. Timing marks are recorded along the tape to identify alternate tracks, and are used on reproduction to ensure correct phasing of the record/playback heads. The heads have different azimuth angles to reduce cross-talk further. The chrominance signal is down-converted, before being added to the frequency modulated luminance signal, so that it lies in a frequency band lower than that of the frequency modulated luminance signal. The carrier frequency of the converted chrominance signal is preferably 1/4f H (2m - 1). The phase of the carrier is constant during every other track and is inverted at line frequency during intervening tracks, effectively ensuring that the chrominance carriers in adjacent tracks are of different frequency and in interleaved relationship.
GB6746/77A 1976-03-01 1977-02-17 Video signal recording and/or reproducing apparatus Expired GB1535482A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP51021997A JPS5857035B2 (en) 1976-03-01 1976-03-01 Color video signal recording device

Publications (1)

Publication Number Publication Date
GB1535482A true GB1535482A (en) 1978-12-13

Family

ID=12070647

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6746/77A Expired GB1535482A (en) 1976-03-01 1977-02-17 Video signal recording and/or reproducing apparatus

Country Status (11)

Country Link
US (1) US4165518A (en)
JP (1) JPS5857035B2 (en)
AT (1) AT368340B (en)
AU (1) AU2254077A (en)
CA (1) CA1088204A (en)
DE (2) DE2759517C2 (en)
FR (1) FR2343385A1 (en)
GB (1) GB1535482A (en)
IT (1) IT1083485B (en)
NL (1) NL192715C (en)
SE (1) SE444251B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4490749A (en) * 1980-11-22 1984-12-25 Victor Company Of Japan, Ltd. Color video signal recording and/or reproducing system

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5437528A (en) * 1977-08-30 1979-03-20 Sony Corp Processing circuit for video signal
JPS54143021A (en) * 1978-04-28 1979-11-07 Sony Corp Processing circuit of video signal
US4635135A (en) * 1979-10-26 1987-01-06 Rca Corporation Recording bias method and circuit
US4481546A (en) * 1981-10-19 1984-11-06 Hitachi, Ltd. Modulator-demodulator for obtaining and demodulating frequency-modulated signal
JPS58121890A (en) * 1981-12-15 1983-07-20 Olympus Optical Co Ltd Picture recorder and reproducer
JPS58191584A (en) * 1982-05-01 1983-11-08 Pioneer Video Kk Recording system and recorder of video information
JPS59101993A (en) * 1982-12-01 1984-06-12 Mitsubishi Electric Corp Video signal recording and reproducing device
JPS59182693A (en) * 1983-03-31 1984-10-17 Victor Co Of Japan Ltd Video signal recording system
DE3404326C1 (en) * 1984-02-08 1985-02-14 Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen VCR with reduced picture crosstalk
JPS63185177A (en) * 1987-01-27 1988-07-30 Sony Corp Frequency modulation circuit
DE59007435D1 (en) * 1989-08-17 1994-11-17 Nokia Deutschland Gmbh Video device.
KR950003637B1 (en) * 1992-12-03 1995-04-17 삼성전자 주식회사 Frequency modulation system

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3925816A (en) * 1968-07-10 1975-12-09 Sony Corp Magnetic recording system with overlapping tracks of high and low frequency information
NO144464C (en) * 1973-07-31 1981-09-09 Sony Corp DEVICE FOR RECORDING INFORMATION SIGNALS
US4007484A (en) * 1973-07-31 1977-02-08 Sony Corporation Magnetic recording and/or reproducing apparatus with chrominance crosstalk elimination
US4007482A (en) * 1973-07-31 1977-02-08 Sony Corporation Magnetic recording and/or reproducing apparatus
GB1497865A (en) * 1973-12-28 1978-01-12 Sony Corp Magnetic recording and/or reproducing apparatus
JPS5625072B2 (en) * 1974-01-12 1981-06-10
JPS531171B2 (en) * 1974-01-21 1978-01-17
US4012771A (en) * 1974-02-05 1977-03-15 Sony Corporation Apparatus for recording and/or reproducing color video signals
JPS5171727A (en) * 1974-12-19 1976-06-21 Victor Company Of Japan

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4490749A (en) * 1980-11-22 1984-12-25 Victor Company Of Japan, Ltd. Color video signal recording and/or reproducing system
AT398667B (en) * 1980-11-22 1995-01-25 Victor Company Of Japan COLOR TELEVISION SIGNAL RECORDING AND / OR PLAYBACK DEVICE WITH A SIGNAL TRANSFORMER MOVING RELATIVELY TO A MAGNETIC RECORDING CARRIER

Also Published As

Publication number Publication date
DE2759517C2 (en) 1982-05-19
IT1083485B (en) 1985-05-21
NL7702190A (en) 1977-09-05
DE2708609C2 (en) 1982-05-06
US4165518A (en) 1979-08-21
AU2254077A (en) 1978-08-31
JPS52105729A (en) 1977-09-05
JPS5857035B2 (en) 1983-12-17
NL192715C (en) 1997-12-02
AT368340B (en) 1982-10-11
ATA137077A (en) 1982-01-15
FR2343385B1 (en) 1981-01-16
CA1088204A (en) 1980-10-21
SE444251B (en) 1986-03-24
FR2343385A1 (en) 1977-09-30
NL192715B (en) 1997-08-01
SE7702211L (en) 1977-09-02
DE2708609A1 (en) 1977-09-08

Similar Documents

Publication Publication Date Title
US4303950A (en) Helical scan video tape recorder for recording video and audio signals on contiguous tracks
EP0038566B1 (en) Magnetic recording and/or reproducing system for television signal
GB1506087A (en) Colour video signal recording and/or reproducing system
JPS5341921A (en) Method of reproducing video signals recorded on respective tracks of recording carrier
JPS57132486A (en) Magnetic recorder and reproducer
MY112704A (en) Apparatus for recording and reproducing a digital video and audio signal.
ES8308125A1 (en) Method and apparatus for recording digital information in alternate recording tracks
GB1535482A (en) Video signal recording and/or reproducing apparatus
ATE14180T1 (en) DEVICE FOR RECORDING AND/OR PLAYBACK OF VIDEO AND SOUND SIGNALS.
GB901964A (en) Electrical signal reproducing system
ES8606707A1 (en) Method and apparatus for recording and/or reproducing signals on/from a record carrier in the form of a tape.
EP0217152A3 (en) Video tape recorder with magnetic head arrangement for recording/reproducing to two different formats
EP0054419A3 (en) Tracking control arrangements for magnetic recording and reproducing devices
ATE30097T1 (en) DEVICE FOR PLAYBACK OF VIDEO AND AUDIO SIGNALS.
EP0312362B1 (en) Magnetic recording and reproducing apparatus
HK11889A (en) Videorecorder with improved sound signal recording
EP0150992A3 (en) Methods of and apparatus for recording digital signals
ES484617A1 (en) Video reproducing apparatus with variable delay means
EP0246883A3 (en) Apparatus for reproducing digital data
US4686584A (en) Video signal reproduction apparatus and method having noise reduction for fast video reproduction
MY109162A (en) Improved magnetic recording/reproducing apparatus using segment recording system
US5280394A (en) Recording/reproducing apparatus for determining the mode of a recorded digital audio signal by detecting different clock frequencies at selected times
GB1177089A (en) Wide Band Recording and Reproducing System
KR870006798A (en) Video Tape Recorder
GB1530307A (en) Video tape recording and reproducing apparatus

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19970216